fix libgui header location

Change-Id: Iec71706cdd4f29c6904993648ce873e83ef9cafe
diff --git a/cmds/screencap/screencap.cpp b/cmds/screencap/screencap.cpp
index 90dfe76..46e41e3 100644
--- a/cmds/screencap/screencap.cpp
+++ b/cmds/screencap/screencap.cpp
@@ -24,7 +24,7 @@
 #include <sys/mman.h>
 
 #include <binder/IMemory.h>
-#include <surfaceflinger/SurfaceComposerClient.h>
+#include <gui/SurfaceComposerClient.h>
 
 #include <SkImageEncoder.h>
 #include <SkBitmap.h>